Reference Flowcell (Reservoir Fill)

The EDT directION 4001 Reference Flowcell Electrode is designed for use with the ISE flowcells for Nitrate, Ammonium, Chloride, Potassium and Calcium. This electrode has a 2.3mm bore and is not suitable for use with the Fluoride flowcell. .

The Reference cell is slotted into the 2 or 3 place flowcell holder with an ISE to make a working electrode system. It incorporates an Ag/AgCl reference refillable at the top of the cell by peeling back the label and revealing the fill hole.

Connection to the Ion Meter is made via a 1mm pin at the top of the electrode next to the fill hole. When configuring the flowcell holder it is important that the reference electrode is upstream. i.e. the first to come into contact with the standard and sample flow. This will ensure good integrity of contact between the cells.

The reference junction is of porous Teflon and is resistant to blockage.

The reference is already supplied filled with saturated KCl/AgCl filling solution. It is normal for some of the KCL to remain un-dissolved. This will not detract from the performance of the system. The reservoir reference electrode should be attached to a bottle of KCl Saturated with AgCl for long time continuous operations. It is important the reservoir solution has an air access hole because it prevents a vacuum forming.

For a complete system you will require the following:

• A reference and ISE flowcell
• A flowcell holder,
• A combination cable to a BNC connector
• An Ion meter EDT model QP459.

Tubing and pump not supplied.

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